Mortar-mixer.



No. 845,942" PATENTED MAR. 5, 1907.

L. D. GENTZLER.

} MORTAR MIXER. APPLIUATION FILED DEO.15,1905.

3 SHEETS-SHEET 1 No} 845,942. 'PATENTED MAR. 5 1907" L. p. GENTZLBR. MORTAR MIXER.

APPLICATION FILED DEfi, 1905 3. SHEETS-SHEET 2.

- PATENTED MAR. 5, 1907.

L. D. GENTZLER. MORTAR MIXER. APPLICATION FILED DEC.15,1905

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army rrrrnn STATES PATENT orrroE.

LOUIS D. GENTZLER, OF PORTIS, KANSAS, ASSIGN OR TO CRESCENT MFGR. 00., OF KANSAS CITY, MISSOURI.

MORTAR-MIXER.

Specification of Letters Patent.

A l ati fil d December 15, 1905- Serial No. 291,887.

mortar, cement, and thelike; and it is characterized particularly by simplicity and cheapness of construction and by lmprovearound the same.

ments with respect to the means for feeding the sand, cement, or other material to a mixing-drum and also with respect to the means for supporting and driving said drum.

In the accompanying drawings, Figure 1 is a perspective view of the invention. Fig. 2 is a top plan view. Fig; 3 is a central longitudinal section. Fig. 4 is an end elevation. Referring specifically .to the drawings, 6

indicates the main sills, upon which the other parts are supported.

7 indicates one hopper, and S'the other say forsand and cement, respectively. 'I hese hoppers are arranged side by side and connect, respectively, with the casings '10 of a pair of elevators, which are arranged side by side and contain endless belts 11, carrying buckets 12. Spouts 13 at the top of the elevators discharge into a hopper 15 at the head of a mixing-drum 16, whlch comprises a metal cylinder containingan axial shaft 17 and paddles or heaters 18, arranged spirally 'Ihis cylinder is sus pended between two standards 19, which are mounted at their lower ends upon the sills 6 by means of a strap 20, which is wound around a winding-shaft 2]., journaled in the top of the standards. This construction enables the drum to be raised or lowered to vary its inclination. 'Ihe mixer-shaft 17'is supported at its ends by cross-bars 22, which extend across the ends of the mixing-cylinder. The main drive-shaft 23 is ournaled in bearings at the head of the uprights 24, which serve also to support the casings of the elevators. This shaft extends through holes in arms 25, which project from the head of the mixing-drum, whereby a pivotal connection of the drum with the shaft is formed to allow the variation of inclination above referred to. At its "upper end the shaft 17 has a bevelgear 26, which meshes with a bevelgear 27 on the drive-shaft 23. The drive-shaft also carries pulleys 28, which are connected by belts 29 with pulleys 30 on the shafts, over which the endless belt conveyers run. The relative size of these pulleys controls the proportions of the respective materials delivered to the 1nixing-drum.

To prevent clogging of the sand or other material in the feed-hoppers 7 and 8, reciprocating feeders 31 are employed, consisting of bars having blades which work to and fro in the hoppers and stir the sand or cement, so that it will feed to the elevators. These bars are connected to eccentrics 32, which are mounted on the shafts 33, which carry the sprockets 34 at the lower end of the elevators. As the wheel rotates the feeders are moved back and forth, with the result stated.

Water is fed to the mixingcylinder through a pipe 35, which terminates in a cap 36, under which the cylinder is provided with a number of perforations and located on the top of the cylinder, near the head thereof, so as to discharge thereinto and spray the water onto the material therein.

The ability to vary the inclination of the mixing-cylinder is advantageous in order to regulate the thicknessof the mortar or cement, because it has been found that the thickness of the mortar will naturally vary according to the feed and the moisture in the sand. The variation of inclination also enables the intimacy of the mixture to be varied. The relative sizes of the pulleys 28 and 30 control the feed of the respective materials. By the substitution of larger or smaller pulleys the feed may be varied as desired.

In a mixing-machine, the combination of a cylinder having arms projecting at opposite sides from the head end thereof, a shaft extending lengthwise within the cylinder and having paddles, a drive-shaft geared "to said shaft and extending horizontallyacross the head of the cylinder and to which the arms are pivotally connected, and. means to raise or lower the other end ofthe cylinder.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS D. GENTZLER.

Withesses:

H. H. BURGARD, W. D. TERRY Patented. March 5,1907. 

